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    <title>Coverage for mtools.util.logfile: 98%</title>
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        <h1>Coverage for <b>mtools.util.logfile</b> :
            <span class='pc_cov'>98%</span>
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        <h2 class='stats'>
            186 statements &nbsp;
            <span class='run hide_run shortkey_r button_toggle_run'>182 run</span>
            <span class='mis shortkey_m button_toggle_mis'>4 missing</span>
            <span class='exc shortkey_x button_toggle_exc'>0 excluded</span>
            
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<p id='t1' class='stm run hide_run'><span class='key'>from</span> <span class='nam'>mtools</span><span class='op'>.</span><span class='nam'>util</span><span class='op'>.</span><span class='nam'>logevent</span> <span class='key'>import</span> <span class='nam'>LogEvent</span><span class='strut'>&nbsp;</span></p>
<p id='t2' class='stm run hide_run'><span class='key'>from</span> <span class='nam'>mtools</span><span class='op'>.</span><span class='nam'>util</span><span class='op'>.</span><span class='nam'>input_source</span> <span class='key'>import</span> <span class='nam'>InputSource</span><span class='strut'>&nbsp;</span></p>
<p id='t3' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t4' class='stm run hide_run'><span class='key'>from</span> <span class='nam'>math</span> <span class='key'>import</span> <span class='nam'>ceil</span><span class='strut'>&nbsp;</span></p>
<p id='t5' class='stm run hide_run'><span class='key'>from</span> <span class='nam'>datetime</span> <span class='key'>import</span> <span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t6' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>time</span><span class='strut'>&nbsp;</span></p>
<p id='t7' class='stm run hide_run'><span class='key'>import</span> <span class='nam'>re</span><span class='strut'>&nbsp;</span></p>
<p id='t8' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t9' class='stm run hide_run'><span class='key'>class</span> <span class='nam'>LogFile</span><span class='op'>(</span><span class='nam'>InputSource</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t10' class='pln'>&nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; wrapper class for log files, either as open file streams of from stdin. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t11' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t12' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>__init__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>filehandle</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t13' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; provide logfile as open file stream or stdin. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t14' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span> <span class='op'>=</span> <span class='nam'>filehandle</span><span class='strut'>&nbsp;</span></p>
<p id='t15' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>name</span> <span class='op'>=</span> <span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>name</span><span class='strut'>&nbsp;</span></p>
<p id='t16' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t17' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span> <span class='op'>=</span> <span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>name</span> <span class='op'>==</span> <span class='str'>&quot;&lt;stdin&gt;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t18' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t19' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t20' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_filesize</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t21' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t22' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_restarts</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t23' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_binary</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t24' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t25' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t26' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_year_rollover</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t27' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t28' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># make sure bounds are calculated before starting to iterate, including potential year rollovers</span><span class='strut'>&nbsp;</span></p>
<p id='t29' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t30' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t31' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t32' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>start</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t33' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of start and end of logfile. Returns None for stdin input currently. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t34' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t35' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t36' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span><span class='strut'>&nbsp;</span></p>
<p id='t37' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t38' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t39' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>end</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t40' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of start and end of logfile. Returns None for stdin input currently. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t41' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t42' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t43' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span><span class='strut'>&nbsp;</span></p>
<p id='t44' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t45' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t46' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>filesize</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t47' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of start and end of logfile. Returns None for stdin input currently. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t48' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t49' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t50' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_filesize</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t51' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t52' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_filesize</span><span class='strut'>&nbsp;</span></p>
<p id='t53' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t54' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t55' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>datetime_format</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t56' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of the datetime format. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t57' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t58' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t59' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span><span class='strut'>&nbsp;</span></p>
<p id='t60' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t61' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t62' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>year_rollover</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t63' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of the datetime format. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t64' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_year_rollover</span> <span class='op'>==</span> <span class='nam'>None</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t65' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t66' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_year_rollover</span><span class='strut'>&nbsp;</span></p>
<p id='t67' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t68' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t69' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>num_lines</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t70' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of the number of lines. Returns None for stdin input currently. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t71' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t72' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t73' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t74' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_iterate_lines</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t75' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span><span class='strut'>&nbsp;</span></p>
<p id='t76' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t77' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t78' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>restarts</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t79' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of all restarts. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t80' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t81' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_iterate_lines</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t82' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_restarts</span><span class='strut'>&nbsp;</span></p>
<p id='t83' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t84' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t85' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>binary</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t86' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; lazy evaluation of the binary name. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t87' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t88' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_iterate_lines</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t89' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_binary</span><span class='strut'>&nbsp;</span></p>
<p id='t90' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t91' class='stm run hide_run'>&nbsp; &nbsp; <span class='op'>@</span><span class='nam'>property</span><span class='strut'>&nbsp;</span></p>
<p id='t92' class='pln'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>versions</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t93' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; return all version changes. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t94' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>versions</span> <span class='op'>=</span> <span class='op'>[</span><span class='op'>]</span><span class='strut'>&nbsp;</span></p>
<p id='t95' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>v</span><span class='op'>,</span> <span class='nam'>_</span> <span class='key'>in</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>restarts</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t96' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>len</span><span class='op'>(</span><span class='nam'>versions</span><span class='op'>)</span> <span class='op'>==</span> <span class='num'>0</span> <span class='key'>or</span> <span class='nam'>v</span> <span class='op'>!=</span> <span class='nam'>versions</span><span class='op'>[</span><span class='op'>-</span><span class='num'>1</span><span class='op'>]</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t97' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>versions</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='nam'>v</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t98' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>versions</span><span class='strut'>&nbsp;</span></p>
<p id='t99' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t100' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>next</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t101' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; get next line, adjust for year rollover and hint datetime format. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t102' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t103' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># use readline here because next() iterator uses internal readahead buffer so seek position is wrong</span><span class='strut'>&nbsp;</span></p>
<p id='t104' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>line</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>readline</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t105' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>line</span> <span class='op'>==</span> <span class='str'>&#39;&#39;</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t106' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>raise</span> <span class='nam'>StopIteration</span><span class='strut'>&nbsp;</span></p>
<p id='t107' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>line</span> <span class='op'>=</span> <span class='nam'>line</span><span class='op'>.</span><span class='nam'>rstrip</span><span class='op'>(</span><span class='str'>&#39;\n&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t108' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t109' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>LogEvent</span><span class='op'>(</span><span class='nam'>line</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t110' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t111' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># hint format and nextpos from previous line</span><span class='strut'>&nbsp;</span></p>
<p id='t112' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span> <span class='key'>and</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span> <span class='op'>!=</span> <span class='nam'>None</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t113' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>ret</span> <span class='op'>=</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>set_datetime_hint</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span><span class='op'>,</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span><span class='op'>,</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>year_rollover</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t114' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>ret</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t115' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># logevent indicates timestamp format has changed, invalidate hint info</span><span class='strut'>&nbsp;</span></p>
<p id='t116' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t117' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t118' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>elif</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t119' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># print &quot;not hinting&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t120' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># gather new hint info from another logevent</span><span class='strut'>&nbsp;</span></p>
<p id='t121' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span> <span class='op'>=</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime_format</span><span class='strut'>&nbsp;</span></p>
<p id='t122' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span> <span class='op'>=</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span><span class='strut'>&nbsp;</span></p>
<p id='t123' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t124' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>le</span><span class='strut'>&nbsp;</span></p>
<p id='t125' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t126' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>__iter__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t127' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; iteration over LogFile object will return a LogEvent object for each line (generator) &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t128' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t129' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t130' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='nam'>True</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t131' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>try</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t132' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t133' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>except</span> <span class='nam'>StopIteration</span> <span class='key'>as</span> <span class='nam'>e</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t134' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># end of log file, get end date</span><span class='strut'>&nbsp;</span></p>
<p id='t135' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>end</span> <span class='key'>and</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t136' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>le</span> <span class='key'>and</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t137' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span> <span class='op'>=</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t138' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t139' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># future iterations start from the beginning</span><span class='strut'>&nbsp;</span></p>
<p id='t140' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t141' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t142' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t143' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># now raise StopIteration exception</span><span class='strut'>&nbsp;</span></p>
<p id='t144' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>raise</span> <span class='nam'>e</span><span class='strut'>&nbsp;</span></p>
<p id='t145' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t146' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># get start date for stdin input</span><span class='strut'>&nbsp;</span></p>
<p id='t147' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>start</span> <span class='key'>and</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t148' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>le</span> <span class='key'>and</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t149' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span> <span class='op'>=</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t150' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t151' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>yield</span> <span class='nam'>le</span><span class='strut'>&nbsp;</span></p>
<p id='t152' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t153' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t154' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>__len__</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t155' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; return the number of lines in a log file. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t156' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>num_lines</span><span class='strut'>&nbsp;</span></p>
<p id='t157' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t158' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t159' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>_iterate_lines</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t160' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; count number of lines (can be expensive). &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t161' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span> <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t162' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_restarts</span> <span class='op'>=</span> <span class='op'>[</span><span class='op'>]</span><span class='strut'>&nbsp;</span></p>
<p id='t163' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t164' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>l</span> <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t165' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>l</span><span class='op'>,</span> <span class='nam'>line</span> <span class='key'>in</span> <span class='nam'>enumerate</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t166' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t167' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># find version string</span><span class='strut'>&nbsp;</span></p>
<p id='t168' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='str'>&quot;version&quot;</span> <span class='key'>in</span> <span class='nam'>line</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t169' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t170' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>restart</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t171' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># differentiate between different variations</span><span class='strut'>&nbsp;</span></p>
<p id='t172' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='str'>&quot;mongos&quot;</span> <span class='key'>in</span> <span class='nam'>line</span> <span class='key'>or</span> <span class='str'>&quot;MongoS&quot;</span> <span class='key'>in</span> <span class='nam'>line</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t173' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_binary</span> <span class='op'>=</span> <span class='str'>&#39;mongos&#39;</span><span class='strut'>&nbsp;</span></p>
<p id='t174' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>elif</span> <span class='str'>&quot;db version v&quot;</span> <span class='key'>in</span> <span class='nam'>line</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t175' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_binary</span> <span class='op'>=</span> <span class='str'>&#39;mongod&#39;</span><span class='strut'>&nbsp;</span></p>
<p id='t176' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t177' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t178' class='stm mis'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>continue</span><span class='strut'>&nbsp;</span></p>
<p id='t179' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t180' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>version</span> <span class='op'>=</span> <span class='nam'>re</span><span class='op'>.</span><span class='nam'>search</span><span class='op'>(</span><span class='str'>r&#39;(\d\.\d\.\d+)&#39;</span><span class='op'>,</span> <span class='nam'>line</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t181' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>version</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t182' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>version</span> <span class='op'>=</span> <span class='nam'>version</span><span class='op'>.</span><span class='nam'>group</span><span class='op'>(</span><span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t183' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>restart</span> <span class='op'>=</span> <span class='op'>(</span><span class='nam'>version</span><span class='op'>,</span> <span class='nam'>LogEvent</span><span class='op'>(</span><span class='nam'>line</span><span class='op'>)</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t184' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_restarts</span><span class='op'>.</span><span class='nam'>append</span><span class='op'>(</span><span class='nam'>restart</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t185' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t186' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_num_lines</span> <span class='op'>=</span> <span class='nam'>l</span><span class='op'>+</span><span class='num'>1</span><span class='strut'>&nbsp;</span></p>
<p id='t187' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t188' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># reset logfile</span><span class='strut'>&nbsp;</span></p>
<p id='t189' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t190' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t191' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t192' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>_calculate_bounds</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t193' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; calculate beginning and end of logfile. &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t194' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t195' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t196' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>False</span><span class='strut'>&nbsp;</span></p>
<p id='t197' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t198' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># get start datetime </span><span class='strut'>&nbsp;</span></p>
<p id='t199' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>line</span> <span class='key'>in</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t200' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>logevent</span> <span class='op'>=</span> <span class='nam'>LogEvent</span><span class='op'>(</span><span class='nam'>line</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t201' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t202' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span> <span class='op'>=</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t203' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_format</span> <span class='op'>=</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime_format</span><span class='strut'>&nbsp;</span></p>
<p id='t204' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span> <span class='op'>=</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>_datetime_nextpos</span><span class='strut'>&nbsp;</span></p>
<p id='t205' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>break</span><span class='strut'>&nbsp;</span></p>
<p id='t206' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t207' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># get end datetime (lines are at most 10k, go back 30k at most to make sure we catch one)</span><span class='strut'>&nbsp;</span></p>
<p id='t208' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>,</span> <span class='num'>2</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t209' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_filesize</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>tell</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t210' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='op'>-</span><span class='nam'>min</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>_filesize</span><span class='op'>,</span> <span class='num'>30000</span><span class='op'>)</span><span class='op'>,</span> <span class='num'>2</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t211' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t212' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>for</span> <span class='nam'>line</span> <span class='key'>in</span> <span class='nam'>reversed</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>readlines</span><span class='op'>(</span><span class='op'>)</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t213' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>logevent</span> <span class='op'>=</span> <span class='nam'>LogEvent</span><span class='op'>(</span><span class='nam'>line</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t214' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t215' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span> <span class='op'>=</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t216' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>break</span><span class='strut'>&nbsp;</span></p>
<p id='t217' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t218' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># if there was a roll-over, subtract 1 year from start time</span><span class='strut'>&nbsp;</span></p>
<p id='t219' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span> <span class='op'>&lt;</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t220' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span><span class='op'>.</span><span class='nam'>replace</span><span class='op'>(</span><span class='nam'>year</span><span class='op'>=</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>_start</span><span class='op'>.</span><span class='nam'>year</span><span class='op'>-</span><span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t221' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_year_rollover</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_end</span><span class='strut'>&nbsp;</span></p>
<p id='t222' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t223' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_year_rollover</span> <span class='op'>=</span> <span class='nam'>False</span><span class='strut'>&nbsp;</span></p>
<p id='t224' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t225' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># reset logfile</span><span class='strut'>&nbsp;</span></p>
<p id='t226' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t227' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t228' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>True</span><span class='strut'>&nbsp;</span></p>
<p id='t229' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t230' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t231' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>_find_curr_line</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>prev</span><span class='op'>=</span><span class='nam'>False</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t232' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; internal helper function that finds the current (or previous if prev=True) line in a log file</span><span class='strut'>&nbsp;</span></p>
<p id='t233' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; based on the current seek position.</span><span class='strut'>&nbsp;</span></p>
<p id='t234' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t235' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>curr_pos</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>tell</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t236' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>line</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t237' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t238' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># jump back 15k characters (at most) and find last newline char</span><span class='strut'>&nbsp;</span></p>
<p id='t239' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>jump_back</span> <span class='op'>=</span> <span class='nam'>min</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>tell</span><span class='op'>(</span><span class='op'>)</span><span class='op'>,</span> <span class='num'>15000</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t240' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='op'>-</span><span class='nam'>jump_back</span><span class='op'>,</span> <span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t241' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>buff</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>read</span><span class='op'>(</span><span class='nam'>jump_back</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t242' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='nam'>curr_pos</span><span class='op'>,</span> <span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t243' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t244' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>newline_pos</span> <span class='op'>=</span> <span class='nam'>buff</span><span class='op'>.</span><span class='nam'>rfind</span><span class='op'>(</span><span class='str'>&#39;\n&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t245' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>prev</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t246' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>newline_pos</span> <span class='op'>=</span> <span class='nam'>buff</span><span class='op'>[</span><span class='op'>:</span><span class='nam'>newline_pos</span><span class='op'>]</span><span class='op'>.</span><span class='nam'>rfind</span><span class='op'>(</span><span class='str'>&#39;\n&#39;</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t247' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t248' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># move back to last newline char</span><span class='strut'>&nbsp;</span></p>
<p id='t249' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>newline_pos</span> <span class='op'>==</span> <span class='op'>-</span><span class='num'>1</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t250' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t251' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t252' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t253' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='nam'>newline_pos</span> <span class='op'>-</span> <span class='nam'>jump_back</span> <span class='op'>+</span> <span class='num'>1</span><span class='op'>,</span> <span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t254' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t255' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># roll forward until we found a line with a datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t256' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>try</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t257' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>logevent</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t258' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='key'>not</span> <span class='nam'>logevent</span><span class='op'>.</span><span class='nam'>datetime</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t259' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>logevent</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t260' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t261' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>logevent</span><span class='strut'>&nbsp;</span></p>
<p id='t262' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>except</span> <span class='nam'>StopIteration</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t263' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># reached end of file</span><span class='strut'>&nbsp;</span></p>
<p id='t264' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t265' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t266' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t267' class='stm run hide_run'>&nbsp; &nbsp; <span class='key'>def</span> <span class='nam'>fast_forward</span><span class='op'>(</span><span class='nam'>self</span><span class='op'>,</span> <span class='nam'>start_dt</span><span class='op'>)</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t268' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='str'>&quot;&quot;&quot; Fast-forward a log file to the given start_dt datetime object using binary search.</span><span class='strut'>&nbsp;</span></p>
<p id='t269' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Only fast for files. Streams need to be forwarded manually, and it will miss the </span><span class='strut'>&nbsp;</span></p>
<p id='t270' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; first line that would otherwise match (as it consumes the log line). </span><span class='strut'>&nbsp;</span></p>
<p id='t271' class='pln'><span class='str'>&nbsp; &nbsp; &nbsp; &nbsp; &quot;&quot;&quot;</span><span class='strut'>&nbsp;</span></p>
<p id='t272' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>from_stdin</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t273' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># skip lines until start_dt is reached</span><span class='strut'>&nbsp;</span></p>
<p id='t274' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span><span class='strut'>&nbsp;</span></p>
<p id='t275' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t276' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t277' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># fast bisection path</span><span class='strut'>&nbsp;</span></p>
<p id='t278' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>min_mark</span> <span class='op'>=</span> <span class='num'>0</span><span class='strut'>&nbsp;</span></p>
<p id='t279' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>max_mark</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filesize</span><span class='strut'>&nbsp;</span></p>
<p id='t280' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>step_size</span> <span class='op'>=</span> <span class='nam'>max_mark</span><span class='strut'>&nbsp;</span></p>
<p id='t281' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t282' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># check if start_dt is already smaller than first datetime</span><span class='strut'>&nbsp;</span></p>
<p id='t283' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t284' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>next</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t285' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span> <span class='key'>and</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span> <span class='op'>&gt;=</span> <span class='nam'>start_dt</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t286' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t287' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span><span class='strut'>&nbsp;</span></p>
<p id='t288' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t289' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>None</span><span class='strut'>&nbsp;</span></p>
<p id='t290' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='num'>0</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t291' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t292' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># search for lower bound</span><span class='strut'>&nbsp;</span></p>
<p id='t293' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='nam'>abs</span><span class='op'>(</span><span class='nam'>step_size</span><span class='op'>)</span> <span class='op'>&gt;</span> <span class='num'>100</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t294' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>step_size</span> <span class='op'>=</span> <span class='nam'>ceil</span><span class='op'>(</span><span class='nam'>step_size</span> <span class='op'>/</span> <span class='num'>2.</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t295' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t296' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='nam'>step_size</span><span class='op'>,</span> <span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t297' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_find_curr_line</span><span class='op'>(</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t298' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>le</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t299' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>break</span><span class='strut'>&nbsp;</span></p>
<p id='t300' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t301' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span> <span class='op'>&gt;=</span> <span class='nam'>start_dt</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t302' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>step_size</span> <span class='op'>=</span> <span class='op'>-</span><span class='nam'>abs</span><span class='op'>(</span><span class='nam'>step_size</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t303' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>else</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t304' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>step_size</span> <span class='op'>=</span> <span class='nam'>abs</span><span class='op'>(</span><span class='nam'>step_size</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t305' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t306' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>if</span> <span class='key'>not</span> <span class='nam'>le</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t307' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>return</span><span class='strut'>&nbsp;</span></p>
<p id='t308' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t309' class='pln'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='com'># now walk backwards until we found a truely smaller line</span><span class='strut'>&nbsp;</span></p>
<p id='t310' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='key'>while</span> <span class='nam'>le</span> <span class='key'>and</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>tell</span><span class='op'>(</span><span class='op'>)</span> <span class='op'>&gt;=</span> <span class='num'>2</span> <span class='key'>and</span> <span class='nam'>le</span><span class='op'>.</span><span class='nam'>datetime</span> <span class='op'>&gt;=</span> <span class='nam'>start_dt</span><span class='op'>:</span><span class='strut'>&nbsp;</span></p>
<p id='t311' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>self</span><span class='op'>.</span><span class='nam'>filehandle</span><span class='op'>.</span><span class='nam'>seek</span><span class='op'>(</span><span class='op'>-</span><span class='num'>2</span><span class='op'>,</span> <span class='num'>1</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t312' class='stm run hide_run'>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class='nam'>le</span> <span class='op'>=</span> <span class='nam'>self</span><span class='op'>.</span><span class='nam'>_find_curr_line</span><span class='op'>(</span><span class='nam'>prev</span><span class='op'>=</span><span class='nam'>True</span><span class='op'>)</span><span class='strut'>&nbsp;</span></p>
<p id='t313' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t314' class='pln'><span class='strut'>&nbsp;</span></p>
<p id='t315' class='pln'><span class='strut'>&nbsp;</span></p>
                
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